std::atomic_ref<T>::store (3) - Linux Manuals
void store( T desired, std::memory_order order = std::memory_order_seq_cst ) const noexcept; (since C++20)
Atomically replaces the current value of the referenced object with desired. Memory is affected according to the value of order.
order must be one of std::memory_order_relaxed, std::memory_order_release or std::memory_order_seq_cst. Otherwise the behavior is undefined.
desired - the value to store into the referenced object
order - memory order constraints to enforce
operator= (public member function)